Update compileSdk to 35 to match dependency on activity

BUG: 346290560
Test: activity:activity-ktx:checkDebugUnitTestAarMetadata

Change-Id: I68ba28d70d616e8c1e3fe01efbebf08e96345177
diff --git a/activity/activity-ktx/build.gradle b/activity/activity-ktx/build.gradle
index 6cc0206..3d1ee71 100644
--- a/activity/activity-ktx/build.gradle
+++ b/activity/activity-ktx/build.gradle
@@ -66,5 +66,6 @@
 }
 
 android {
+    compileSdk 35
     namespace "androidx.activity.ktx"
 }